Siemens SAMMS-MV user manual Over load Spec ificat ions

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Appendix A Technical Specifications

Overload Specifications

Overload classes	Overload classes 2 through 23 with one second increments.
Trip Characteristics	Tripping time at 6 x IFLC = 95% of the overload class (±5%).
	Tripping time at 1.5 x IFLC within two minutes for warm conditions for all classes.
Tripping threshold	(1.1 ± 0.05) x IFLC for motors with 1.00 service factor, and
	(1.2 ± 0.05) x IFLC for motors with 1.15 service factor.
Tripping time	20 minutes @1.15 x IFLC for motors with service factor 1.
Mechanical jam protection	Sudden increase of the motor running current. Pick-up current adjustable from 120 to
SAMMS-MVX only	400% in increments of 5% of IFLC . Pick-up time 360 msec.
	Default values: 200% IFLC .
Loss of load protection	Sudden decrease of motor running current. Pick-up current adjustable form 20 to 95% in
SAMMS-MVX only	increments of 5% of I FLC. Pick-up time 360 msec.
	Default values: 50% I FLC.
Process current warning	Settings from 0 to 100% of IFLC.
SAMMS-MVX only
Accuracy	± 5% of overload trip curve values.
	± 2% repeat accuracy.
Phase unbalance protection	Response time after 1 second
	Shifted trip threshold value to 0.9 x IFLC at 40% phase unbalance.
Equipment ground fault protection	Response time after 1.4 seconds.
	Pick-up time: 360 msec.
	Pick-up current:
	Overload Relay Size	Pick-up Current	Default
	H3A	7A- IFLC	10A
	H3B	7A- IFLC	10A
	H3C	7A- IFLC	10A
	H6	7A- I FLC	20A
Rotor protection	Cold stall time adjustable from 5 to 100 seconds in increments of 1 second. If cold stall
	time is not known, default value shall be according to the type of motor used.
	Motor Type		Cold Stall Time
	Open Drip Proof (ODP)		10 Seconds
	Totally Enclosed Fan Cooled (EFC)		20 Seconds
Ambient temperature	Motor ambient temperature adjustable 0 - 70°C in increments of 5°C.
	Default value: 40°C.

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Contents SAMMS-MV Qualified Person Contents Field Service Operation Signal WordsQualified Person About this Manual SAMMS-MV Device Models Advanced Protection for Medium-Voltage MotorsOverload Protection Using the Standardized Control PanelProgramming Control Circuits Outputs One Change settings requires password Yes Remote inputs OneSAMMS-MV Model Light barsInstalling the SAMMS-MV Device Full voltage non-reversing connection diagram Grounding the Device SAMMS-MV device communications connections Performing a Lamp Test Password ProtectionUsing the Reset/Test Push Button Performing an Overload Relay TestOutput Devices Input DevicesLadder Diagrams Library of Standard Ladder Diagrams Custom Ladder DiagramsSAMMS-MVX Standard control circuits PB1 PB2 PB3 PB4 PB5 PB6 Incomplete Sequence Ridethrough Upon Loss of Power SAMMS-MVX OnlyMotor Ambient Temperature Intelligent Reduced-Voltage Starting SAMMS-MVX OnlyODP motor thermal signature Protection Curves and Overload Classes Seconds Operating the SAMMS-MV 11 Motor protection graph Dual Overload Protection SAMMS-MVX Only Ultimate Trip Level and Service FactorPhase Unbalance Jam Protection SAMMS-MVX OnlyStart Inhibit Ground Fault DetectionRepetitive Starts Cooling Time Constants12 Multi-start scenario for an ODP motor Emergency Restarting Autoreset After a Trip SAMMS-MVX OnlyUsing the Hand Held Communicator HHC Function Key5A CT primary current if used Full load current for OLR No 5A CT primary current low speed if used Service factorFunction Number Motor type Overload trip class class 2 throughUsing the SAMMS-MV Device Func- tions Using the Enter KeyUP and Down Keys ON/OFF Means warning Select ground fault pick-up currentDefault Value Select jam pickup current 120-400% Iflc F24 Loss of Load13 Entering and changing passwords SAMMS-MV Functions Program Mode/PasswordsF0 Ambient Temperature F1 Control Circuit Number and Incomplete Se- quence StatusF4 Full-Load Current for Overload Relay #1 Overload Setting Step Default Relay Size RangeF3 Size for Overload Relay #2 SAMMS-MVX Only 18 to 72AF7 Overload Trip Class F6 Service FactorF6A Motor Type F7A Cold Stall TimeF10 Display Time to Restart F8 Autoreset SAMMS-MVX OnlyF9 Phase Unbalance Protection F11 Emergency RestartingSize Pickup Current Default H3A-H3C 7A-I FLC 10A 20A F12 Ground Fault Protection or WarningF12A Ground Fault Pickup Current F13 Set Programmable Timer #1F17 Current Unbalance F21 Reset Motor DataF16 Trip Current F18 Display Total Elapsed Run Time of the MotorF23 Jam Protection SAMMS-MVX Only F25 Percentage of Motor Winding TemperatureF22 Process Current Warning Level SAMMS-MVX Only F23A Jam Pickup Current SAMMS-MVX OnlyF26 Baud Rate F27 AddressTroubleshooting Error Condition Troubleshooting Guide Error Condition Appendix a Technical Specifications Over load Spec ificat ions Stat ist ica l Data Dimensions Catalog Number SAM6 Switch # Function Position 375 Siemens Energy Automation, Inc